Molecular engineering of a synergistic photocatalytic and photothermal membrane for highly efficient and durable solar water purification

Fang, Kun; Du, Chunfang; Zhang, Junshuai; Zhou, Chen; Yang, Shengyang

doi:10.1016/j.memsci.2022.121037

Cited by 34 publications

(4 citation statements)

References 77 publications

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“…The Ni@Gr membrane exhibited a higher evaporation rate compared to the Ni membrane, indicating that the hierarchical structure and the introduction of graphene were beneficial to improving the evaporation performance. The water evaporation rate of the Ni@Gr membrane can reach 2.05 kg m –2 h –1 with a solar–vapor conversion efficiency of 80.63%, which was higher than the theoretical limit (1.47 kg m –2 h –1 ) due to the reduction of evaporation enthalpy (1343.6 kJ/kg). , The superhydrophilic hierarchical structure of the Ni@Gr membrane facilitated a reduction in evaporation enthalpy by promoting the formation of additional intermediate water. , As shown in Figure d, the peaks at 3233 and 3401 cm –1 were attributed to the free water (FW), while the peaks at 3514 and 3630 cm –1 belong to intermediate water (IW) . The IW/FW ratio of water inside the Ni@Gr membrane is 0.639, which confirmed the decrease of evaporation enthalpy.…”

Section: The Chemical Composition Of the Ni@gr Membranementioning

confidence: 90%

“…The water evaporation rate of the Ni@Gr membrane can reach 2.05 kg m −2 h −1 with a solar−vapor conversion efficiency of 80.63%, which was higher than the theoretical limit (1.47 kg m −2 h −1 ) due to the reduction of evaporation enthalpy (1343.6 kJ/kg). 52,53 The superhydrophilic hierarchical structure of the Ni@Gr membrane facilitated a reduction in evaporation enthalpy by promoting the formation of additional intermediate water. 52,54 As shown in Figure 5d, the peaks at 3233 and 3401 cm −1 were attributed to the free water (FW), while the peaks at 3514 and 3630 cm −1 belong to intermediate water (IW).…”

Section: Membranementioning

confidence: 99%

“…52,53 The superhydrophilic hierarchical structure of the Ni@Gr membrane facilitated a reduction in evaporation enthalpy by promoting the formation of additional intermediate water. 52,54 As shown in Figure 5d, the peaks at 3233 and 3401 cm −1 were attributed to the free water (FW), while the peaks at 3514 and 3630 cm −1 belong to intermediate water (IW). 54 The IW/FW ratio of water inside the Ni@Gr membrane is 0.639, which confirmed the decrease of evaporation enthalpy.…”

Section: Membranementioning

confidence: 99%

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One-Step Electrochemically Prepared Bionic Hierarchical Nickel Black@Graphene Composite Membrane for Desalination by Solar–Thermal Energy Conversion

Yue,

Ma,

Zhang

et al. 2024

Nano Lett.

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Ingenious microstructure construction and appropriate composition selection are effective strategies for achieving enhanced performance of photothermal materials. Herein, a broccoli-like hierarchical nickel black@graphene (Ni@Gr) membrane for solar-driven desalination was prepared by a one-step electrochemical method, which was carried out simultaneously with the electrochemical exfoliation of graphene and the co-deposition of Ni@Gr material. The bionic hierarchical structure and the chemical composition of the Ni@Gr membrane increased the sunlight absorption (90.36%) by the light-trapping effect and the introduction of graphene. The Ni@Gr membrane achieved high evaporation rates of 2.05 and 1.16 kg m −2 h −1 under simulated (1 sun) and outdoor sunlight conditions, respectively. The superhydrophilicity and the hierarchical structure of the Ni@ Gr membrane jointly reduced the evaporation enthalpy (1343.6 kJ/kg), which was beneficial to break the theoretical limit of the evaporation rate (1.47 kg m −2 h −1 ). This work encourages the application of bionic metal−carbon composite photothermal materials in solar water evaporation.

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Section: The Chemical Composition Of the Ni@gr Membranementioning

confidence: 90%

Section: Membranementioning

confidence: 99%

Section: Membranementioning

confidence: 99%

See 1 more Smart Citation

One-Step Electrochemically Prepared Bionic Hierarchical Nickel Black@Graphene Composite Membrane for Desalination by Solar–Thermal Energy Conversion

Yue,

Ma,

Zhang

et al. 2024

Nano Lett.

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“…Until now, the solar interface evaporator has demonstrated fantastic application prospects in the fields of seawater desalination and sewage purification [ 9 , 10 , 11 ]. Generally, a typical high-performance solar interface evaporator should have some unique features, such as outstanding light absorption performance, continuous and reliable water supply capacity, good thermal management ability, and porous steam channel structure [ 12 , 13 , 14 , 15 ]. In this respect, metal materials [ 16 , 17 , 18 , 19 ], semiconductors [ 20 , 21 , 22 , 23 ], carbon-based materials [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ], and organic polymers [ 32 , 33 ] are the four broad categories of solar thermal conversion materials because of their high light absorption performance.…”

Section: Introductionmentioning

confidence: 99%

Biochar-Based Photothermal Hydrogel for Efficient Solar Water Purification

et al. 2023

Self Cite

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The development of technology for solar interface evaporation has a significant meaning for the sustainable use of water resources in remote regions. However, establishing a solar evaporator with a high evaporation rate and favorable water treatment capabilities remains challenging. In this work, we reported a silver nanoparticle (AgNP)@carbonized cattail (CC)/polyvinyl alcohol (PVA) composite hydrogel (ACPH) membrane. Because of the successfully loaded AgNPs, which have a photothermal synergy with the CC, the ACPH-10 membrane obtained an excellent photothermal conversion performance. Additionally, the hydrophilicity of the ACPH-10 membrane ensures a sustainable water supply which is necessary for the improvement of the evaporation rate. Therefore, the ACPH-10 membrane achieves an evaporation rate of 1.66 kg m−2 h−1 and an efficiency of 88.0%, attributed to the remarkable photothermal conversion and water transmission. More importantly, the membrane exhibits superior purification ability in a variety of sewage. Pollutant removal rates in heavy metal and organic dye sewage have exceeded 99.8%. As a result, the ACPH membrane holds great promise for wastewater recovery and seawater desalination, which can aid in resolving the water crisis issue.

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Reinforcing the Efficiency of Plastic Upgrading through Full‐Spectrum Photothermal Effect Integration of Heat Isolator

Gong,

Wang,

Yang

et al. 2024

Advanced Science

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Photoreforming of polyethylene terephthalate (PET) to H2 is practically attractive strategy for upgrading waste plastics. The major challenge is to utilize the infrared energy in the solar spectrum to improve the efficiency for photoreforming of PET to H2. Herein, through the ingenious integration of tungsten phosphide nanoparticles and tungsten single atoms (WP/W SAs) with carbon nitride (g‐C3N4), the constructed hybrid inherits both the desirable properties and structural merits of the respective building blocks. Specifically, the photothermal effect of WP/W SAs couples with the “heat isolator” role of g‐C3N4 due to its low thermal conductivity, thereby forming localized high‐temperature regions, reducing the activation energy and improving the kinetics in the photoreforming of PET to H2. Additionally, the green pretreatment of PET using alkali‐free hydrothermal strategy is reported, achieving direct separation of the ethylene glycol and terephthalic acid. This work not only provides an alkali‐free hydrothermal pretreatment for PET, but also integrates the photothermal effect with the thermal insulation and opens a new avenue for harnessing solar energy into to convert plastics into H2.

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Molecular engineering of a synergistic photocatalytic and photothermal membrane for highly efficient and durable solar water purification

Cited by 34 publications

References 77 publications

One-Step Electrochemically Prepared Bionic Hierarchical Nickel Black@Graphene Composite Membrane for Desalination by Solar–Thermal Energy Conversion

One-Step Electrochemically Prepared Bionic Hierarchical Nickel Black@Graphene Composite Membrane for Desalination by Solar–Thermal Energy Conversion

Biochar-Based Photothermal Hydrogel for Efficient Solar Water Purification

Reinforcing the Efficiency of Plastic Upgrading through Full‐Spectrum Photothermal Effect Integration of Heat Isolator

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